The strong-correlated topological properties can be well described by the degeneracy
in entanglement spectrum of ground-state, entanglement entropy, and excited energy gap.
The system is topological nontrivial if the
entanglement spectrum is degenerate since the entanglement spectrum
is associated with the energy spectrum of edge excitations [1]}, [2]}, [3]}, [4]}, [5]}, [6]}, [7]}.
The entanglement spectrum is defined as a logarithmic rescaling of the Schmidt
values [7]}
\(\xi _{i}=-\ln (\rho _{i}),\) 
